Self-focusing in processes of laser generation of highly-charged and 
high-energy heavy ions

Láska, L.; Jungwirth, K.; Krása, J.; Krouský, E.; Pfeifer, M.; Rohlena, K.; Ullschmied, J.; Badziak, J.; Parys, P.; Wołowski, J.; Gammino, S.; Torrisi, L.; Boody, F.P.

doi:10.1017/s0263034606060253

Cited by 37 publications

(27 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In such conditions effects of self-focusing occur producing an increment of the laser pulse intensity increasing significantly the ion kinetic energy, the x-ray emission intensity, the electron plasma temperature, and the average ion charge state. 8,9 The maximum proton energy in forward direction was obtained with thin Au films, i.e., with hydrogenated targets having high electron density. In such direction IC spectra at 0 • give maximum proton energy of about 3 MeV, in agreement with results obtained from TPS spectra.…”

Section: Resultsmentioning

confidence: 99%

Proton emission from thin hydrogenated targets irradiated by laser pulses at 1016 W/cm2

Torrisi

Giuffrida

Cutroneo

et al. 2012

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

The iodine laser at PALS Laboratory in Prague, operating at 1315 nm fundamental harmonics and at 300 ps FWHM pulse length, is employed to irradiate thin hydrogenated targets placed in vacuum at intensities on the order of 10(16) W∕cm(2). The laser-generated plasma is investigated in terms of proton and ion emission in the forward and backward directions. The time-of-flight technique, using ion collectors and semiconductor detectors, is used to measure the ion currents and the corresponding velocities and energies. Thomson parabola spectrometer is employed to separate the contribution of the ion emission from single laser shots. A particular attention is given to the proton production in terms of the maximum energy, emission yield, and angular distribution as a function of the laser energy, focal position, target thickness, and composition. Metallic and polymeric targets allow to generate protons with large energy range and different yield, depending on the laser, target composition, and target geometry properties.

show abstract

Section: Resultsmentioning

confidence: 99%

Proton emission from thin hydrogenated targets irradiated by laser pulses at 1016 W/cm2

Torrisi

Giuffrida

Cutroneo

et al. 2012

Review of Scientific Instruments

Self Cite

View full text Add to dashboard Cite

show abstract

“…Such spectra show that the ion acceleration grow with the I 2 parameter and depends on the laser pulse duration and focal position. Nonlinear effects are probably due to the use of -100 m focal position at the PALS that induces self-focusing, as reported in the previous articles [11,12].…”

Section: Resultsmentioning

confidence: 64%

Nanostructured targets for TNSA laser ion acceleration

et al. 2016

View full text Add to dashboard Cite

Abstract. Nanostructured targets, based on hydrogenated polymers with embedded nanostructures, were prepared as thin micrometric foils for high-intensity laser irradiation in TNSA regime to produce high-ion acceleration. Experiments were performed at the PALS facility, in Prague, by using 1315 nm wavelength, 300 ps pulse duration and an intensity of 10 16 W/cm 2 and at the IPPLM, in Warsaw, by using 800 nm wavelength, 40 fs pulse duration, and an intensity of 10 19 W/cm 2 . Forward plasma diagnostic mainly uses SiC detectors and ion collectors in time of fl ight (TOF) confi guration. At these intensities, ions can be accelerated at energies above 1 MeV per nucleon. In presence of Au nanoparticles, and/or under particular irradiation conditions, effects of resonant absorption can induce ion acceleration enhancement up to values of the order of 4 MeV per nucleon.

show abstract

“…The detected signal is affected by refl ections from different metallic elements inside and outside of the vacuum chamber, and by the elements used to transmit the signal outside of the chamber like cables, windows, etc., so it makes sense to plot the energy of EMP intercepted by the loop antenna outside of the chamber vs. the laser energy. Apparently, the shot-to-shot fl uctuations in the emission of charged particles and X-rays [12] -which are probably caused by nonlinear beam-plasma interactions as, for example, the self-focusing of the laser beam [13][14][15] and the bursts in ion emission [16][17][18] -are also a characteristic feature of the EMP emission.…”

Section: Resultsmentioning

confidence: 99%

Electromagnetic pulses produced by expanding laser-produced Au plasma

et al. 2015

View full text Add to dashboard Cite

Abstract. The interaction of an intense laser pulse with a solid target produces large number of fast free electrons. This emission gives rise to two distinct sources of the electromagnetic pulse (EMP): the pulsed return current through the holder of the target and the outfl ow of electrons into the vacuum. A relation between the characteristics of laser-produced plasma, the target return current and the EMP emission are presented in the case of a massive Au target irradiated with the intensity of up to 3 × 10 16 W/cm 2 . The emission of the EMP was recorded using a 12 cm diameter Moebius loop antennas, and the target return current was measured using a new type of inductive target probe (T-probe). The simultaneous use of the inductive target probe and the Moebius loop antenna represents a new useful way of diagnosing the laser-matter interaction, which was employed to distinguish between laser-generated ion sources driven by low and high contrast laser pulses.

show abstract

Self-focusing in processes of laser generation of highly-charged and high-energy heavy ions

Cited by 37 publications

References 26 publications

Proton emission from thin hydrogenated targets irradiated by laser pulses at 1016 W/cm2

Proton emission from thin hydrogenated targets irradiated by laser pulses at 1016 W/cm2

Nanostructured targets for TNSA laser ion acceleration

Electromagnetic pulses produced by expanding laser-produced Au plasma

Contact Info

Product

Resources

About